JP4407949B2 - Hair cosmetics - Google Patents

Description

  The present invention relates to hair cosmetics, and more specifically to hair cosmetics useful for hair conditioners, hair treatments and the like.

  Conventionally, hair conditioners and hair treatments have been generally emulsified with a mono-long-chain cationic activator or a rinse-like gel formed from a mono-long-chain amine and a higher alcohol together with ester oils, silicones, etc. Has been used. Examples of such a mono long-chain cation activator or mono long-chain amine include, for example, monoalkyltrimethylammonium salts [JP-A-4-134020 (Patent Document 1) and the like], higher fatty acid dimethylaminopropylamide [JP No. 9-71515 (patent document 2), Japanese translations of PCT publication No. 2004-508313 (patent document 3) etc.], N- [3-alkyloxy-2-hydroxypropyl] -L-arginine salt [JP-A-11-106309 No. (Patent Document 4) and the like] and alkoxypropyldimethylamine [JP 2002-114647 A (Patent Document 5) and the like] are known. These mono long-chain cationic activators or products using mono long-chain amines and higher alcohols have high long-term stability and moderate viscosity and elasticity at room temperature [Journal of Chemical Society of Japan 1989, (1 ), P26-32 (Non-Patent Document 1)].

  However, in such conventional hair conditioners and hair treatments, the sun's ultraviolet rays, excessive coloring, excessive perm treatment and heat treatment, and subsequent hair washing treatment, etc., can cause hair damage that has become a problem in recent years. However, it cannot be said that it can fully cope with it.

By using a di-long-chain cationic surfactant instead of the cationic surfactant described above, it is expected to recover / improve the damaged and hydrophilized hair surface [for example, JP-A-2002 No. 255751 (Patent Document 6)].
JP-A-4-134020 JP-A-9-71515 JP-T-2004-508313 JP-A-11-106309 JP 2002-114647 A JP 2002-255751 A Journal of the Chemical Society of Japan 1989, (1), p26-32 Journal of the Chemical Society of Japan 1977, (10), p1428-1432

  However, to date, hair cosmetics that use di-long-chain cationic activators as the main ingredients are still sufficiently satisfactory, such as lack of viscosity and elasticity at room temperature and lack of long-term stability. Not reached. In addition, using only a di-long-chain cation activator and a higher alcohol as a base is referred to the phase diagram drawn in Kokudae (Non-patent Document 2), Journal of Chemical Society of Japan 1977, (10), p1428-1432. However, it is considered extremely difficult to achieve both long-term stability and appropriate viscosity and elasticity at room temperature.

  In addition, in order to give viscosity / elasticity at room temperature in hair cosmetics, when a general thickener commonly used in the cosmetics field is blended, there is a thickener that cannot achieve its purpose. Even if it can provide the desired viscosity and elasticity at room temperature, other problems (remarkably hindering manufacturing workability, the handling from the container-filled product is significantly worsened, A means for deteriorating the hair feel at the time of use, etc.) and a means for solving all of these problems has not yet been provided.

  The problem to be solved by the present invention is to further study hair cosmetics using the di-long-chain cation activator as a main ingredient, and to provide a product that is truly satisfactory to consumers.

  As a result of studies for solving the above problems, the present inventor is excellent in usability and safety by using a long-chain cationic activator and a higher alcohol in combination with a specific associative thickener. In addition, the present inventors have found that a hair cosmetic composition characterized by being easy to produce due to a decrease in viscosity at a high temperature is provided, and the present invention has been completed. In addition, the associative thickener has a molecular weight of about tens of thousands, which is low compared to general-purpose polymer thickeners (hundreds of thousands to millions). It is thought to behave like this and thicken the system. In the specific associative thickener described above, the higher alcohol moieties at both ends serve as hydrophobic associative groups and have a mechanism of thickening.

This invention is invention which provides the hair cosmetics (henceforth this hair cosmetics ) containing the component of following (A)-(C).
(A) 0.01-10 mass% of di long chain type | mold cationic active agent shown by following formula (1) with respect to hair cosmetics whole quantity.
^{Wherein, R} a CO, in well be each independently identical or different, are carbon atoms 12 to 22, an aliphatic acyl group having 0-3 double bonds, p is 1 3 represents a number, and X represents a halogen compound, methosulfate or methophosphate. ]

(B) 0.01-10 mass% of hydrophobic modified polyether urethane represented by following formula (3) with respect to hair cosmetics whole quantity.
[ Wherein R ¹ is a hydrocarbon group having the number of carbon atoms in which the molecular weight of the formula R ¹ — [(O—R ² ) _k —OH] _m ranges from 500 to 100,000, and R ² is carbon A hydrocarbon group having 2 to 8 atoms, R ⁴ is a hydrocarbon group having 2 to 8 carbon atoms, and these hydrocarbon groups R ¹ R ² and R ⁴ are the same or different from each other; Also good. Furthermore, ^{R 3} is a hydrocarbon group which may have a urethane bond of carbon atoms 1 to 17, ^{R 5} represents a linear, branched or secondary hydrocarbon of carbon atoms 8 to 36 a group or a fluorocarbon group, m is a number of 2 or more, h is a number of 1 or more, k and n is a number in the range of independently 0 to 1000. ]

(C) Higher alcohol is contained in an amount of 0.01 to 30 % by mass based on the total amount of the hair cosmetic, and the component (C) is in the relationship with the component (A) (C) component / (A) component. (Mass ratio) = 1/1 to 3/1.

  According to the present invention, there is provided a hair cosmetic useful for hair conditioners, hair treatments and the like, which is excellent in usability and safety and is easy to produce.

As described above, the present hair cosmetic is a hair cosmetic containing components (A) to (C) as essential components. Hereinafter, embodiments of the present invention including these essential components will be disclosed.
[(A) for the components]
The component (A) is at least one cationic activator selected from the above-mentioned dilong chain cationic activators (1) and / or (2).

In formula (1), R ^a CO represents an aliphatic acyl group having 12 to 22 carbon atoms and having 0 to 3 double bonds. p represents the number of 1-3.

X represents a halogen compound, methosulfate or methophosphate .

The component (A) is preferably a coconut oil fatty acid ester quat halide or methosulphate. Examples of the trade name of the component (A) (dicocoylethylhydroxyethylmonium methosulfate) include DEHYQUART L80 (Cognis Japan). (A) As for the compounding quantity of a component, 0.01-10 mass% is preferable with respect to hair cosmetics whole quantity, More preferably, it is 0.1-5 mass%. If the amount is less than 0.01% by mass with respect to the total amount of the hair cosmetic, the hair conditioning effect tends to be inferior or the long-term stability tends to be inferior. On the other hand, if it exceeds 10% by mass, the hair is excessively conditioned. In particular, there is a tendency to stickiness and lack viscosity and elasticity at room temperature.

[ About component (B) ]
The component (B) is the hydrophobically modified polyether urethane (3).

The hydrophobically modified polyether urethane represented by the general formula (3) is, for example, one or more polyether polyols represented by R ¹ -[(O—R ² ) k—OH] _m , and R ^3. Reaction of one or more polyisocyanates represented by — (NCO) _{h + 1} with one or more polyether monoalcohols represented by HO— (R ⁴ —O) _n —R ⁵ Can be obtained.

In this case, R ^{1 to} R ⁵ in the general formula (3) are R ¹ -[(O—R ² ) _k —OH] _m , R ³ — (NCO) _{h + 1} , HO— (R ⁴ — O) is determined by _n -R ^5. The charging ratio of the three members is not particularly limited, but the ratio of the hydroxyl group derived from polyether polyol and polyether monoalcohol to the isocyanate group derived from polyisocyanate is NCO / OH = 0.8: 1 to 1.4: 1. Is preferred.

The polyether polyol compound that can be suitably used for obtaining the hydrophobically modified polyether urethane represented by the general formula (3) of the present invention is represented by R ¹ -[(O—R ² ) _k —OH] _m . It can be obtained by addition polymerization of m-valent polyol with alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide, epichlorohydrin, styrene oxide or the like.

  Here, as the polyol, those having 2 to 8 valences are preferable. For example, dihydric alcohols such as ethylene glycol, propylene glycol, butylene glycol, hexamethylene glycol and neopentyl glycol, glycerin, trioxyisobutane and 1,2,3- Butanetriol, 1,2,3-pentanetriol, 2-methyl-1,2,3-propanetriol, 2-methyl-2,3,4-butanetriol, 2-ethyl-1,2,3-butanetriol 2,3,4-pentanetriol, 2,3,4-hexanetriol, 4-propyl-3,4,5-heptanetriol, 2,4-dimethyl-2,3,4-pentanetriol, pentamethylglycerin , Pentaglycerin, 1,2,4-butanetriol, 1,2,4-pentanetriol, trimethylolethane Trihydric alcohols such as trimethylolpropane, pentaerythritol, 1,2,3,4-pentanetetrol, 2,3,4,5-hexanetetrol, 1,2,4,5-pentanetetrol, 1, Tetravalent alcohols such as 3,4,5-hexanetetrol, pentavalent alcohols such as adnit, arabit, and xylit, hexavalent alcohols such as dipentaerythritol, sorbit, mannitol, and exit, and octavalent alcohols such as sucrose Etc.

Also, R ² is determined by the alkylene oxide, styrene oxide, etc. to be added, and since it is particularly easily available and can exhibit excellent effects, alkylene oxide or styrene oxide having 2 to 4 carbon atoms is preferable. .

The alkylene oxide and styrene oxide to be added may be homopolymerization, two or more kinds of random polymerization, or block polymerization. The addition method may be a normal method. Moreover, the polymerization degree k is 0-1000, Preferably it is 1-500, More preferably, it is 10-200. The ratio of ethylene to total ^{R 2} is preferably 50 to 100 wt% with respect to all ^{R 2.}

The molecular weight of R ¹ -[(O—R ² ) _k —OH] _m is preferably 500 to 100,000, particularly preferably 1,000 to 50,000.

The polyisocyanate which can be suitably used for obtaining the hydrophobically modified polyether urethane represented by the general formula (3) of the present invention is represented by R ^3- (NCO) _{h + 1} and has two or more isocyanates in the molecule. It will not specifically limit if it has group. For example, aliphatic diisocyanate, aromatic diisocyanate, alicyclic diisocyanate, biphenyl diisocyanate, diisocyanate of phenylmethane, triisocyanate, tetraisocyanate and the like can be mentioned.

  Examples of the aliphatic isocyanate include methylene diisocyanate, dimethylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, dipropyl ether diisocyanate, 2,2-dimethylpentane diisocyanate, 3-methoxyhexane diisocyanate, Octamethylene diisocyanate, 2,2,4-trimethylpentane diisocyanate, nonamethylene diisocyanate, decamethylene diisocyanate, 3-butoxyhexane diisocyanate, 1,4-butylene glycol dipropyl ether diisocyanate, thiodihexyl diisocyanate, metaxylylene diisocyanate, paraxylylene Range isocyanate, Te Examples include tramethylxylylene diisocyanate.

  Examples of the aromatic diisocyanate include metaphenylene diisocyanate, paraphenylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, dimethylbenzene diisocyanate, ethylbenzene diisocyanate, isopropylbenzene diisocyanate, tolidine diisocyanate, and 1,4- Naphthalene diisocyanate, 1,5-naphthalene diisocyanate, 2,6-naphthalene diisocyanate, 2,7-naphthalene diisocyanate and the like can be mentioned.

  Examples of the alicyclic diisocyanate include hydrogenated xylylene diisocyanate and isophorone diisocyanate.

  Examples of biphenyl diisocyanate include biphenyl diisocyanate, 3,3′-dimethylbiphenyl diisocyanate, 3,3′-dimethoxybiphenyl diisocyanate, and the like.

  Examples of the diisocyanate of phenylmethane include diphenylmethane-4,4′-diisocyanate, 2,2′-dimethyldiphenylmethane-4,4′-diisocyanate, diphenyldimethylmethane-4,4′-diisocyanate, 2,5,2 ′. , 5′-tetramethyldiphenylmethane-4,4′-diisocyanate, cyclohexylbis (4-isothiontphenyl) methane, 3,3′-dimethoxydiphenylmethane-4,4′-diisocyanate, 4,4′-dimethoxydiphenylmethane 3,3′-diisocyanate, 4,4′-diethoxydiphenylmethane-3,3′-diisocyanate, 2,2′-dimethyl-5,5′-dimethoxydiphenylmethane-4,4′-diisocyanate, 3,3′- Dichlorodiphenyldimethylmethane-4,4'-diisocyanate, benzophenone -3,3'-diisocyanate and the like.

  Examples of the triisocyanate include 1-methylbenzene-2,4,6-triisocyanate, 1,3,5-trimethylbenzene-2,4,6-triisocyanate, 1,3,7-naphthalene triisocyanate, and biphenyl. -2,4,4'-triisocyanate, diphenylmethane-2,4,4'-triisocyanate, 3-methyldiphenylmethane-4,6,4'-triisocyanate, triphenylmethane-4,4 ', 4' ' -Triisocyanate, 1,6,11-undecane triisocyanate, 1,8-diisocyanate-4-isocyanate methyloctane, 1,3,6-hexamethylene triisocyanate, bicycloheptane triisocyanate, tris (isocyanatephenyl) thiophosphate, etc. Is mentioned.

  Moreover, you may use with the dimer and trimer (isocyanurate coupling | bonding) of these polyisocyanate compounds, and you may make it react with an amine and use it as a biuret.

Further, polyisocyanates having urethane bonds obtained by reacting these polyisocyanate compounds with polyols can also be used. As a polyol, the thing of 2-8 valence is preferable, and the above-mentioned polyol is preferable. Incidentally, R 3 ^- (NCO) if the _{h + 1} using trivalent or more polyisocyanates, polyisocyanate preferably has the urethane bond.

The polyether monoalcohol that can be suitably used to obtain the hydrophobically modified polyether urethane represented by the general formula (3) of the present invention is represented by HO— (R ⁴ —O) _n —R ⁵ , The polyether is not particularly limited as long as it is a polyether of a linear, branched or secondary monohydric alcohol. Such a compound can be obtained by addition polymerization of alkylene oxide such as ethylene oxide, propylene oxide, butylene oxide, epichlorohydrin, styrene oxide, or the like to linear, branched or secondary monohydric alcohol.

  Here, the linear alcohol is represented by the following general formula (4).

Moreover, the branched chain alcohol here is represented by the following general formula (5).

Moreover, secondary alcohol here is represented by the following general formula (6).

Therefore, R ⁵ is a group obtained by removing the hydroxyl group in the general formulas (4) to (6). In the above general formulas (4) to (6), R ⁶ , R ⁷ , R ⁸ , R ¹⁰ and R ¹¹ are a hydrocarbon group or a fluorocarbon group, for example, an alkyl group, an alkenyl group, an alkylaryl group, A cycloalkyl group, a cycloalkenyl group, and the like.

  Examples of the alkyl group include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tertiary butyl, pentyl, isopentyl, neopentyl, tertiary pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl, decyl, undecyl, dodecyl. , Tridecyl, isotridecyl, myristyl, palmityl, stearyl, isostearyl, icosyl, docosyl, tetracosyl, triacontyl, 2-octyldodecyl, 2-dodecylhexadecyl, 2-tetradecyloctadecyl, monomethyl branched-isostearyl and the like.

  Examples of the alkenyl group include vinyl, allyl, propenyl, isopropenyl, butenyl, pentenyl, isopentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tetradecenyl, oleyl and the like.

  The alkylaryl group includes phenyl, toluyl, xylyl, cumenyl, mesityl, benzyl, phenethyl, styryl, cinnamyl, benzhydryl, trityl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonyl Examples include phenyl, α-naphthyl, β-naphthyl group and the like.

  Examples of the cycloalkyl group and the cycloalkenyl group include a cyclopentyl, cyclohexyl, cycloheptyl, methylcyclopentyl, methylcyclohexyl, methylcycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, methylcyclopentenyl, methylcyclohexenyl, methylcycloheptenyl group. Etc.

R ⁹ is a hydrocarbon group or a fluorocarbon group, for example, an alkylene group, an alkenylene group, an alkylarylene group, a cycloalkylene group, a cycloalkenylene group, or the like.

R ⁵ is a hydrocarbon or fluorocarbon group, preferably an alkyl group, more preferably 8 to 36 carbon atoms, and particularly preferably 12 to 24 carbon atoms.

Further, the alkylene oxide, styrene oxide and the like to be added may be homopolymerization, two or more kinds of random polymerization, or block polymerization. The addition method may be a normal method. The degree of polymerization n is 0 to 1000, preferably 1 to 200, more preferably 10 to 50. The ratio of ethylene to total ^{R 4} is preferably 50 to 100 wt% with respect to all the ^{R 4,} and more preferably from 65 to 100 wt%.

  As a method for producing the hydrophobically modified polyether urethane represented by the above general formula (3), the reaction is carried out, for example, by heating at 80 to 90 ° C. for 1 to 3 hours in the same manner as in the reaction of an ordinary polyether and isocyanate. You can get it at least.

Further, a polyether polyol (a) represented by R ¹ -[(O—R ² ) _k —OH] _m , a polyisocyanate (b) represented by R ³ — (NCO) _{h + 1} , and HO— ( When the polyether monoalcohol (c) represented by R ⁴ —O) _n —R ⁵ is reacted, other than the compound having the structure of the general formula (3) may be by-produced. For example, when diisocyanate is used, the main product is a c-b-a-b-c type compound represented by the general formula (3). Compounds such as the b- (ab) x-abc type may be by-produced. In this case, the compound of the general formula (3) type can be used in the present invention in the form of a mixture containing the compound of the general formula (3) type without separation.

  In the present invention, a commercially available product may be used as the hydrophobically modified polyether urethane. As a commercial item, Adecanol GT-700 (made by Asahi Denka Co., Ltd.) is mentioned, for example.

  In the present hair cosmetic, the hydrophobically modified polyether urethane (3) is preferably 0.01 to 10% by mass, more preferably 0.1 to 4% by mass, based on the total amount of the hair cosmetic. If it is less than 0.01% by mass relative to the total amount of the hair cosmetic, it tends to be inferior in long-term stability and inferior in viscosity and elasticity at room temperature. On the other hand, if it exceeds 10% by mass, it can be removed from the container. It is bad and the tendency which is easy to manufacture is also inferior.

[ About component (C) ]
Component (C) is a higher alcohol. The higher alcohol that can be blended in the present hair cosmetic is not particularly limited as long as it can be used in the field of cosmetics. For example, saturated linear monohydric alcohol, unsaturated monohydric alcohol, etc. are mentioned. As saturated linear monohydric alcohols, dodecanol (= lauryl alcohol), tridecanol, tetradecanol (= myristyl alcohol), pentadecanol, hexadecanol (= cetyl alcohol), heptadecanol, octadecanol (= stearyl) Alcohol), nonadecanol, icosanol (= aralkyl alcohol), heicosanol, docosanol (= behenyl alcohol), tricosanol, tetracosanol (= carnervir alcohol), pentacosanol, hexacosanol (= seryl alcohol) and the like and mixtures thereof (Cetostearyl alcohol, hardened rapeseed oil alcohol, etc.). (C) A component can use 1 type (s) or 2 or more types. In the present hair cosmetic, the higher alcohol as the component (C) is preferably 0.1 to 30% by mass, more preferably 1 to 15% by mass with respect to the total amount of the hair cosmetic. If it is less than 0.1% by mass relative to the total amount of hair cosmetics, it tends to be inferior in viscosity and elasticity at room temperature. Is recognized.

  The component (C) is preferably (C) component / (A) component (mass ratio) = 1/2 to 10/1, preferably 1/1 to 3/1, in relation to the component (A). Is particularly preferred. In this mass ratio, when it is larger than 10/1 (that is, (C) component is excessive), it tends to be inferior in long-term stability, and when it is smaller than 1/2 (that is, (A) component is excessive), There is a tendency to be inferior in viscosity and elasticity.

  As described above, by blending the essential components (A) to (C) in the hair cosmetic, not only the usability and safety are excellent, but also the production is easy due to a decrease in viscosity at high temperature. The present hair cosmetic is provided.

  In the present hair cosmetic, other additive components can be optionally blended within a range not impairing the effects of the present invention. Examples of such components include powder components, liquid fats and oils, solid fats and oils, waxes, hydrocarbons, higher fatty acids, ester oils, silicone oils, anionic surfactants, cationic surfactants (excluding component (A)), Amphoteric surfactants, nonionic surfactants, humectants, water-soluble polymers, thickeners (excluding component (B)), UV absorbers, sequestering agents, lower alcohols, polyhydric alcohols, sugars, amino acids , Organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidant auxiliaries, water, etc., as needed, manufactured according to the intended dosage form can do.

  The present hair cosmetic is suitably used, for example, as hair rinse, hair treatment and the like. In general, hair cosmetics such as normal hair rinses and hair treatments are generally used from the viewpoint of safety, after applying a sample of less than 10 g per time to the hair and immediately washing it off. In the present hair cosmetics, not only the hair conditioning effect that is more effective than normal hair cosmetics in the same manner of use as described above, but also the hands and brushes (including electric brushes) applied by applying the present hair cosmetics Spread the entire scalp and hair while massaging the scalp, and then wash it off after standing for 1 to 15 minutes and / or apply a sample of 10 g to 100 g at a time for more effective hair A conditioning effect and a treatment effect can be obtained. The present hair cosmetics have extremely low cytotoxicity and are extremely safe without being irritating to the scalp and hair even when applied to the scalp / hair and left for a certain period of time.

  Examples of the present invention will be described below, but the scope of the present invention is not limited thereby. Unless otherwise specified, the blending amount is mass% with respect to the blending target.

[Test method]
The test method performed for the evaluation of the test product in this example is disclosed.
(1) Manufacturability (ease of stirring at high temperature) test Five professional engineers manufactured the same composition, and determined the ease of stirring at high temperature according to the following criteria.

5 points: Can be stirred very easily 4 points: Can be stirred as usual 3 points: Slightly difficult to stir 2 points: Extremely difficult to stir 1 point: Even if stirring is continued, it does not become uniform (separation occurs) Yes)

Furthermore, the average score was evaluated according to the following criteria.
A: The average score was 4.5 or more.
○: The average score was 3.0 or more and less than 4.5.
(Triangle | delta): The average score was 1.5 points or more and less than 3.0 points.
X: The average score was less than 1.5 points.

(2) Ease of handling from container-filled products Evaluate the ease of handling of test samples filled in wide-mouth resin containers using a specialized panel (5 men + 5 women) Went.
(Evaluation)
◎: 8 or more out of 10 people answered that it is easy to take ○ ○: 6 to 7 out of 10 people answered that it was easy to take △: 3 to 10 out of 10 people answered that it was easy to take Answer ×: Less than 2 out of 10 responded that it was easy to take

(3) Test on hair feel (smoothness) when wet We asked a specialist panel (10 women) to test the actual use of the shampooed hair, and the smoothness of the hair when wet (water wet) Evaluation was performed.
(Evaluation)
◎: More than 8 out of 10 respondents say that the hair is smooth when wet ○: More than 6 out of 10 respondents say that the hair is smooth when wet △: 3 out of 10 persons 5 or less respondents answered that the wet hair was smooth. ×: 2 or less of 10 respondents said that the wet hair was smooth.

(4) Hair feel test after 4 hours after drying A test panel for actual use of hair was tested by a special panel (10 women), and the smoothness of the hair after 4 hours after drying was evaluated. .
(Evaluation)
◎: 8 or more out of 10 respondents said their hair is smooth ○: 6 or more out of 10 persons answered that their hair is smooth △: 3 or more out of 10 persons are 5 or less Answer that hair is smooth ×: Less than 2 out of 10 respondents said that hair is smooth

(5) A test on the sustainability of the treatment sensation When a test panel is used by a professional panel (10 women), and the following standard conditioner is used at the rate of once / day after the following day: Then, the durability of the smooth feeling and the smoothness of the hair after drying was evaluated by the number of days elapsed until returning to the state before using the test sample. In addition, when both the good feeling of smoothness after drying and the goodness of hair unity were determined, it was determined that the feeling of treatment was maintained, and the determination was made according to the following criteria.

◎: Treatment feeling lasted for an average of 6 days or more.
○: The treatment feeling lasted from 4 days to less than 6 days.
Δ: Treatment feeling lasted from 2 days to less than 4 days.
X: The treatment feeling continued until the average number of days was less than 2 days.

(6) Test for stability of appearance The appearance and state after filling 80 g of a test sample into a commercially available screw tube 100 ml container and leaving them at 40 ° C, room temperature, and 10 ° C for 3 months each for 3 months, Observation was made while comparing with the appearance and state before standing, and the evaluation was as follows.
(Example: Uniform appearance, viscosity, etc.)
(Evaluation)
A: No abnormality was observed in any of the cases.
○: Slight abnormality was observed in one.
Δ: Abnormality was observed in 2 or more and 4 or less.
X: Abnormality was observed in 5 or more.

(7) Safety test While the test sample was diluted, a cytotoxicity test (using rabbit corneal cells) was performed to measure the concentration (IC ₅₀ ) at which the cell lethality reached 50% (the value was high). The higher the concentration, the higher the safety).
A: IC ₅₀ was 300 μg / mL or more.
○: IC ₅₀ was 200 μg / mL or more and less than 300 μg / mL.
Δ: IC ₅₀ was 100 μg / mL or more and less than 200 μg / mL.
X: IC ₅₀ was less than 100 μg / mL.

[Example 1, Comparative Examples 1-7]
Test products (treatments) having the prescriptions shown in Table 1 below were produced by the following methods, tested according to the above methods, and evaluated. The results are also shown in Table 1.

<Manufacturing method>
After the compounds A-1 to A-7 (see Table 2) and polyethylene glycol (Mw 3 million) were wetted with propylene glycol, the other components were mixed at 75 ° C. for 30 minutes or more. Furthermore, after carrying out a fixed homomixer process at 75 degreeC, it cooled to 30 degreeC. The ease of stirring at a high temperature (75 ° C.) was determined at a stage immediately before the homomixer treatment after the mixing.

In Table 2, for the compounds A-1 to A-6, together with their respective general names, the commercial products used in the examples are listed along with their manufacturer names (common in all examples). The third embodiment is an example outside the scope of the present invention due to correction.

  From the results shown in Table 1, Example 1 in which the components (A) to (C) were formulated in combination was the highest evaluation in all the test items (1) to (6). ) Examples using other thickeners instead of the hydrophobic modified polyether urethane [(PEG-240 / decyltetradeceth-20 / HDI) copolymer] (Comparative Examples 1 to 6, and further thickeners) It was found that in Comparative Example 7 in which the above was removed, the evaluation in almost all items was low.

[Examples 2-3, Comparative Examples 7-9]
In accordance with the examples and comparative examples shown in Table 1, test products were produced in accordance with the contents of Table 3, and tests were conducted on them.

  From the results shown in Table 3, Examples 2-3 in which the components (A) to (C) were formulated in combination were almost highest in all test items (1) to (6). However, in the examples (Comparative Examples 7 to 9) in which other cationic surfactants were used in place of the di-long-chain cationic surfactant (1) which is the component (A), evaluations in almost all items fell. It became clear.

[Example 4, Comparative Example 10]
In accordance with the examples and comparative examples shown in Table 1, test products were produced in accordance with the contents of Table 4, and tests were performed on them.

  From the results shown in Table 4, Example 4 in which the components (A) to (C) were formulated in combination was the highest evaluation in all the test items (1) to (6). The comparative example 10 from which the components (C) to (C) were removed was particularly inferior in manufacturability and safety.

  Below, the prescription of the other Example of this hair cosmetics is shown. The manufacturing method of the product of each example is in accordance with Example 1. Each performance test was also performed by the test method described above.

[Example 5] Hair conditioner Formulation component Formulation amount (% by mass)
(PEG-240 / decyltetradeces-20 / HDI) copolymer (compound A-1) 0.5
Dicocoyl ethyl hydroxyethylmonium methosulfate 3.0
Cetostearyl alcohol 5.0
Citric acid 0.2
Arginine 0.1
Sucrose 3.0
Dipropylene glycol 6.0
Isopropylene glycol 4.0
2-Octyldodecanol 0.2
Octyl palmitate 0.5
Dimethiconol (1000cs) 1.5
Dimethicone gum / dimethicone mixture (1/10) 2.0
Phenoxyethanol 0.5
Methylparaben 0.2
Titanium oxide 0.5
Fragrance 0.4
Pepper tincture 0.1
Menthol 0.2
Hydrolyzed wheat protein 0.05
Water residue

  The hair conditioner of Example 5 is manufacturable (easy to stir at high temperature), easy to handle from a container-filled product, smoothness of hair when wet, hair feel after drying, sustainability of treatment feeling And the stability of the appearance was excellent.

Claims (2)

A hair cosmetic containing the following components (A) to (C).
(A) 0.01-10 mass% of di long chain type | mold cationic active agent shown by following formula (1) with respect to hair cosmetics whole quantity.
^{Wherein, R} a CO, in well be each independently identical or different, are carbon atoms 12 to 22, an aliphatic acyl group having 0-3 double bonds, p is 1 3 represents a number, and X represents a halogen compound, methosulfate or methophosphate. ]
(B) 0.01-10 mass% of hydrophobic modified polyether urethane represented by following formula (3) with respect to hair cosmetics whole quantity.
[ Wherein R ¹ is a hydrocarbon group having the number of carbon atoms in which the molecular weight of the formula R ¹ — [(O—R ² ) _k —OH] _m ranges from 500 to 100,000, and R ² is carbon A hydrocarbon group having 2 to 8 atoms, R ⁴ is a hydrocarbon group having 2 to 8 carbon atoms, and these hydrocarbon groups R ¹ R ² and R ⁴ are the same or different from each other; Also good. Furthermore, ^{R 3} is a hydrocarbon group which may have a urethane bond of carbon atoms 1 to 17, ^{R 5} represents a linear, branched or secondary hydrocarbon of carbon atoms 8 to 36 a group or a fluorocarbon group, m is a number of 2 or more, h is a number of 1 or more, k and n is a number in the range of independently 0 to 1000. ]
(C) Higher alcohol is contained in an amount of 0.01 to 30 % by mass based on the total amount of the hair cosmetic, and the component (C) is in the relationship with the component (A) (C) component / (A) component. (Mass ratio) = 1/1 to 3/1. The component (A) in the hair cosmetic is a halogenated compound, methosulfate or methophosphate of dicocoylethylhydroxyethylmonium, and the component (B) is [PEG-240 / decyltetradeceth-20 / The hair cosmetic composition according to claim 1 , which is a [HDI] copolymer .